| Birkenau to Castelo Branco | 1,038.68 mi (1,671.60 km) |
| Birkenau to Castro Daire | 1,003.12 mi (1,614.37 km) |
| Birkenau to Celorico de Basto | 983.62 mi (1,582.98 km) |
| Birkenau to Chamusca | 1,098.34 mi (1,767.61 km) |
| Birkenau to Chaves | 946.81 mi (1,523.74 km) |
| Birkenau to Cinfaes | 1,001.69 mi (1,612.07 km) |
| Birkenau to Coimbra | 1,054.57 mi (1,697.17 km) |
| Birkenau to Condeixa-a-Nova | 1,061.77 mi (1,708.76 km) |
| Birkenau to Corroios | 1,159.79 mi (1,866.51 km) |
| Birkenau to Coruche | 1,119.51 mi (1,801.68 km) |
| Birkenau to Costa de Caparica | 1,161.46 mi (1,869.18 km) |
| Birkenau to Covilha | 1,015.84 mi (1,634.83 km) |
| Birkenau to Eiras | 1,052.90 mi (1,694.48 km) |
| Birkenau to Elvas | 1,074.12 mi (1,728.63 km) |
| Birkenau to Entroncamento | 1,092.09 mi (1,757.55 km) |
